Genetic characterization of resistance to wilt disease caused by Fusarium oxysporum f. sp. ricini in castor (Ricinus communis L.)

2017 ◽  
Vol 16 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Ranjan K. Shaw ◽  
P. Kadirvel ◽  
Mobeen Shaik ◽  
M. Santha Lakshmi Prasad ◽  
R. D. Prasad ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Ricinus Communis ◽  
Screening Method ◽  
Inbred Lines ◽  
Wilt Disease ◽  
Hybrid Breeding ◽  
Oilseed Crop ◽  
Sources Of Resistance ◽  
Ricinus Communis L ◽  
Serious Disease

AbstractCastor is an industrially important oilseed crop. Vascular wilt caused by the soil borne fungus Fusarium oxysporum f. sp. ricini is a serious disease of castor. Use of resistant cultivars is the only viable option for management of wilt disease problem in castor production. Excellent sources of resistance to wilt have been found in castor germplasm. In this study, a set of four castor inbred lines (48–1, CI-1, AP42 and AP48) was characterized for inheritance of resistance to wilt by studying segregating populations generated by crossing these inbred lines with eight different susceptible genotypes. An artificial screening method (sick pot) with a new scoring system (days to wilt) was used for evaluation of plant progenies for reaction to the pathogen infection. The reaction of F1s indicated that the nature of resistance in 48–1, CI-1 and AP48 is recessive whereas it was dominant in AP42. Inheritance results from eight F2 populations showed that resistance to wilt is conferred by a single locus in one population and at least two loci, which interact in complementary way, in other seven populations. Different modes of inheritance were also observed when the same resistant source was crossed with different susceptible parents, indicating the possible role of genetic backgrounds in determining resistance. Overall, the results suggested that Mendelian resistance to wilt is predominant in the castor genotypes, which can be exploited for breeding cultivars. Particularly, AP42 with dominant nature of resistance will be of great interest to hybrid breeding.

Defense responses to Fusarium oxysporum f. sp. ricini infection in castor (Ricinus communis L.) cultivars

2019 ◽  
Vol 72 (4) ◽  
pp. 647-656 ◽  
Author(s):  
E. Bharathi ◽  
M. Santha Lakshmi Prasad ◽  
Praduman Yadav ◽  
Hameeda Bee
Keyword(s):  
Fusarium Oxysporum ◽  
Ricinus Communis ◽  
Defense Responses ◽  
Ricinus Communis L

scholarly journals Salt-Tolerance in Castor Bean (Ricinus communis L.) Is Associated with Thicker Roots and Better Tissue K+/Na+ Distribution

Agriculture ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 821
Author(s):  
Junlin Zheng ◽  
Gilang B. F. Suhono ◽  
Yinghao Li ◽  
Maggie Ying Jiang ◽  
Yinglong Chen ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Dry Weight ◽  
Root Diameter ◽  
Oilseed Crop ◽  
Salt Tolerant ◽  
Ricinus Communis L ◽  
Young Leaves

Soil salinity is a serious threat to agriculture worldwide. Castor bean (Ricinus communis L.) is an in-demand oilseed crop containing 40–60% highly valued oil in its seeds. It is moderately sensitive to salinity. Two glasshouse experiments were conducted to assess plant growth and ion tissue distribution in different castor bean genotypes under various salt stress conditions to explore their potential for cultivation on saline land. Experiment 1 evaluated the response of five castor bean genotypes to four salt treatments (0, 50, 100, or 150 mM NaCl) up to 91 days after sowing (DAS). Experiment 2 further evaluated two genotypes selected from Experiment 1 in 1 m deep PVC tubes exposed to 0, 100, or 200 mM NaCl treatment for 112 DAS (Experiment 2). Experiment 1 showed that salt addition (particularly 150 mM NaCl) reduced plant height, stem diameter, shoot and root dry weights, photosynthetic traits, and leaf K+/Na+ ratio while increasing the leaf Na+ concentration of castor bean plants. Two genotypes, Zibo (Chinese variety) and Freo (Australian wild type), were more salt-tolerant than the other tested genotypes. In Experiment 2, salt-stressed Zibo flowered earlier than the control, while flowering time of Freo was not influenced by salt stress. The 200 mM NaCl treatment reduced the total root length and increased the average root diameter of both Zibo and Freo compared to the control. In addition, the 200 mM NaCl treatment significantly decreased total leaf area, chlorophyll content, and shoot and root dry weight of both castor bean genotypes by 50%, 10.6%, 53.1%, and 59.4%, respectively, relative to the control. In contrast, the 100 mM NaCl treatment did not significantly affect these traits, indicating that both genotypes tolerated salt stress up to 100 mM NaCl. In general, Freo had greater salt tolerance than Zibo, due to its higher average root diameter, lower Na+ concentration, and higher K+/Na+ ratio in young leaves under salt conditions. In conclusion, genotype Freo is recommended for cultivation in saline soils and could be used to breed high-yielding and salt-tolerant castor bean genotypes.

A re-evaluation of castor (Ricinus communis L.) as a crop plant.

2014 ◽  
Vol 9 (038) ◽  
Author(s):  
Kammili Anjani Kammili Anjani
Keyword(s):  
Castor Oil ◽  
Crop Production ◽  
Seed Oil ◽  
Ricinus Communis ◽  
Biodiesel Production ◽  
Oilseed Crop ◽  
Ricinus Communis L ◽  
Global Demand ◽  
Increasing Demand ◽  
Returns On Investment

Abstract Castor (Ricinus communis L.) has been transformed from a wasteland colonizer to an important industrial oilseed crop. Its seed oil is one of the most sought-after vegetable oils because of its rich properties and variety of end-users. Castor is an ancient crop but its production now has been limited mainly to India, China and Brazil, for many reasons. Castor oil is a hot market commodity product. It has been recently recognized as an efficient feedstock for biodiesel production. Increasing demand world over for biofuel resources and many recently identified industrial uses of castor oil have escalated castor oil demand. Global demand for castor oil is rising constantly at 3-5% per annum. In the last decade, many countries have started making serious exploratory efforts at growing castor as there is a tremendous scope to establish castor as a supplementary crop production option to farmers and to provide significant returns on investment given high global demand for castor oil. In view of the increasing worldwide interest in castor oil, this review evaluates the global scenario of castor cultivation, exports and imports of castor oil, new interests in castor oil and genetic improvement in productivity. In addition, the current research challenges and priorities have been discussed in the review.

Description of 90 inbred lines of castor plant (Ricinus communis L.)

Euphytica ◽  
2014 ◽  
Vol 202 (1) ◽  
pp. 13-33 ◽  
Author(s):  
Marco Baldanzi ◽  
Mirina Luiza Myczkowski ◽  
Mariangela Salvini ◽  
Mario Macchia
Keyword(s):  
Ricinus Communis ◽  
Inbred Lines ◽  
Ricinus Communis L ◽  
Castor Plant

scholarly journals Research article Comparison of artificial screening methods for evaluation of resistance to Fusarium wilt disease of castor (Ricinus communis L.)

2018 ◽  
Vol 10 (4) ◽  
pp. 1192-1195
Author(s):  
Gokil Prasad Gangwar ◽  
A.G. Desai
Keyword(s):  
Fusarium Wilt ◽  
Ricinus Communis ◽  
Wilt Disease ◽  
Screening Methods ◽  
Research Article ◽  
Fusarium Wilt Disease ◽  
Ricinus Communis L ◽  
Soil Infestation ◽  
Moderately Resistant ◽  
Wilt Incidence

This study was carried out to compare two artificial screening methods viz. Soil Infestation method (SIM) and root dip inoculation technique (RDIT), under glasshouse conditions for the screening of resistant to Fusarium wilt. Both the artificial screening methods; SIM and RDIT were statistically similar in respect of wilt incidence. However, the reaction exhibited by the castor genotypes was varied with artificial screening methods. Mean wilt incidence obtained through SIM (53.9%) was higher as compared to RDIT (44.8%). All the genotypes exhibited comparatively higher wilt incidence when screened through SIM as compared to RDIT. Genotype DCS 9 exhibited resistant reaction (15.8 %) when screened through RDIT but was moderately resistant (32.5 %) when screened through SIM. It was concluded that SIM could also be used for screening of castor genotypes for the resistance to Fusarium wilt disease. However, lower level of resistance could be evaluated efficiently with saving 8-10 days through RDIT as compared to soil infestation method.

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